### Chains, subwords, and fillings: strong equivalence of three definitions of the Bruhat order.

Zara, Catalin (2006)

The Electronic Journal of Combinatorics [electronic only]

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Zara, Catalin (2006)

The Electronic Journal of Combinatorics [electronic only]

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Bogaerts, Mathieu (2010)

The Electronic Journal of Combinatorics [electronic only]

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Peter Leupold, Victor Mitrana (2007)

RAIRO - Theoretical Informatics and Applications

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Duplication is the replacement of a factor within a word by . This operation can be used iteratively to generate languages starting from words or sets of words. By undoing duplications, one can eventually reach a square-free word, the original word's duplication root. The duplication root is unique, if the length of duplications is fixed. Based on these unique roots we define the concept of duplication code. Elementary properties are stated, then the conditions under which infinite...

Blanchet-Sadri, F., Howell, T. (2002)

International Journal of Mathematics and Mathematical Sciences

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Stanley, Richard P. (2009)

The Electronic Journal of Combinatorics [electronic only]

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Giuseppe Pirillo (2008)

RAIRO - Theoretical Informatics and Applications

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We first prove an extremal property of the infinite Fibonacci word : the family of the palindromic prefixes {} of is not only a circular code but “almost” a comma-free one (see Prop. 12 in Sect. 4). We also extend to a more general situation the notion of a necklace introduced for the study of trinucleotides codes on the genetic alphabet, and we present a hierarchy relating two important classes of codes, the comma-free codes and the circular ones.

Falucskai, J. (2008)

Acta Mathematica Academiae Paedagogicae Nyí regyháziensis. New Series [electronic only]

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Squire, Matthew B. (1996)

The Electronic Journal of Combinatorics [electronic only]

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Gravier, S., Moncel, J., Semri, A. (2008)

The Electronic Journal of Combinatorics [electronic only]

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King, Oliver D. (2003)

The Electronic Journal of Combinatorics [electronic only]

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Martine Leonard (1988)

RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications

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